Best Tool to Migrate NAS Data to SharePoint Online
Question details
Organizations are looking for a reliable, Microsoft-supported tool to migrate approximately 2 TB of files from a network-attached storage (NAS) device to SharePoint Online.

- Product
- SharePoint Online
- Device & OS
- not provided
- Scenario
- Migrating a large volume of files and folders from an on-premises network storage device to a cloud-based SharePoint Online environment.
- Observed behavior
- The user needs an official and efficient migration solution to successfully transfer local data without data loss.
Ensure you have Global Administrator or SharePoint Administrator permissions in Microsoft 365, and that the PC running the migration tool has full read access to your NAS network path.
Use the Microsoft SharePoint Migration Tool (SPMT)
SPMT is the official, free application provided by Microsoft designed specifically to migrate files from on-premises file shares and NAS to Microsoft 365.
The Microsoft SharePoint Migration Tool (SPMT) is the best solution for transferring data from network-attached storage to SharePoint Online or OneDrive for Business. It efficiently handles large-scale transfers like a 2 TB migration while preserving folder structures and file metadata.
Download the SharePoint Migration Tool from the official Microsoft website and install it on a Windows computer that has a fast, stable connection to your NAS device.
Launch SPMT and sign in using your Microsoft 365 administrator credentials to authenticate the destination environment.
Choose 'File Share' as your migration source and enter the network path (UNC path) pointing to the files on your NAS.
Choose 'SharePoint' as the destination, then enter the exact URL of your SharePoint Online site and select the specific document library where the files should be placed.
Review your migration settings, ensure user permissions mapping is correct if needed, and click 'Migrate' to begin transferring your NAS data to the cloud.

Seamlessly manage your documents with WPS Office
While you migrate your infrastructure and storage to SharePoint Online, you might need a fast, reliable, and cost-effective application to handle your daily document editing. WPS Office is a highly compatible free alternative to Microsoft Office.
- 1. Download WPS Office: Visit the official WPS website to download the free Office suite installation package.
- 2. Install the Application: Run the installer and follow the quick setup wizard to install WPS Office on your computer.
- 3. Edit Your Files: Open, edit, and save your newly migrated docx, xlsx, and pptx documents directly from your local synced SharePoint folders.

Frequently Asked Questions
Can I use SPMT to migrate data to OneDrive for Business instead of SharePoint?
Yes, the SharePoint Migration Tool allows you to choose either SharePoint Online sites or individual users' OneDrive for Business accounts as your migration destination.
Does the SharePoint Migration Tool preserve file permissions?
Yes, SPMT can preserve file and folder permissions during the migration. You can configure user mapping settings in the tool to match on-premises Active Directory users with their Microsoft 365 accounts.
Are there any file size limitations when migrating files to SharePoint Online?
SharePoint Online currently supports a maximum file size of 250 GB per individual file. Ensure that no single file on your NAS exceeds this limit before initiating the migration.
Can I continue working on files while SPMT is migrating data?
While it is possible, it is not recommended to modify files on the NAS during active migration, as those changes might not be captured in the initial sync. You can, however, use incremental migration features to sync changes made after the first pass.




